{
  "$type": "site.standard.document",
  "description": "Disclosed is a laminated porous film for a separator of a battery that, while having excellent air permeation performance which contributes to electric performance, has a shutdown property which is one of properties important from the viewpoint of ensuring safety. The laminated porous film is…",
  "path": "/patents/1011839",
  "publishedAt": "2011-06-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B32B27/08",
    "MITSUBISHI PLASTICS INC [JP]"
  ],
  "textContent": "Disclosed is a laminated porous film for a separator of a battery that, while having excellent air permeation performance which contributes to electric performance, has a shutdown property which is one of properties important from the viewpoint of ensuring safety. The laminated porous film is characterized in that the laminated porous film comprises layer A formed of a porous layer composed mainly of a polypropylene resin and layer B formed of a porous layer composed mainly of a polyethylene resin, has a ²-activity, and has an electric resistance of not more than 10© at 25 °C and an electric resistance of not less than 100© after heating at 135 °C for 5 seconds and/or an air permeability of not more than 1000 sec/100ml at 25 °C and an air permeability of not less than 10000 sec/100ml after heating at 135 °C for 5 seconds.",
  "title": "LAMINATED POROUS FILM FOR SEPARATOR"
}